BE1026548B1 - A SLOPE IN SITU LOADING DEVICE - Google Patents

Abstract

The present invention relates to the field of experimental simulation equipment, and in particular a device for loading in situ on a slope. The device includes a model frame system, an axial load device, a precipitation simulation system and a servo control system. The test model is mounted inside the model chassis system. Said axial load device is fixedly mounted on the model frame system, and the axial load device is connected to the signal of the servo control system. Said precipitation simulation system is fixedly mounted on the chassis system. In this way, the model is fixed in the frame system. The specimen is pressurized via the axial load device. The servo drive is pressurized via the servo drive system. The model can be loaded and tested according to the actual situation, allowing to perform the simulation of the actual load and the working conditions of precipitation, in order to perform the in situ test on a slope.

Description

A SLOPE IN SITU LOADING DEVICE BE2019 / 5982 Technical Field The present invention relates to the field of experimental simulation equipment, and in particular to a slope in situ loading device. Background At present, the in situ sloping loading device of surface mine slope slip test site, can accomplish large scale slope slip test research under control and intervention textbooks, in particular: research on the mechanisms and predictions of rock slope collapse and landslide, design of large-scale slopes, engineering simulation of accidents and disasters, etc. It provides technical support for the prevention of disasters due to landslides. Content of the invention The technical problem to be solved by the present invention consists in providing a device for loading in situ on a slope, making it possible to solve the problem of carrying out an in situ test on a slope.

The technical solution of the present invention used to solve the above technical problems is as follows: a sloping site loading device, includes a chassis system, an axial load device, a precipitation simulation system and a system. servo control. The test model is placed in the chassis system. Said axial load device is fixedly mounted on the chassis system of the model, and the axial load device is connected to the signal of the servo control system. Said precipitation simulation system is fixedly mounted on the chassis system.

Further, said frame system includes a load beam, a reaction force beam, a front wall, a rear wall, a support plate and two side walls. Said front wall, side wall, rear wall and side wall are spliced sequentially to form a frame structure. Said support plate is mounted under said frame structure, and the two ends of the reaction force bundle are removably connected to the two side walls. Said load beam is movably mounted under the reaction force beam. Said axial load device is mounted on the reaction force beam, and the load beam is fixedly coupled to the axial load device. Said precipitation simulation system is mounted between said two side walls.

Further, said side wall includes a plurality of side wall splice plates and a plurality of support columns. The lower ends of said support columns are mounted on the support plate, and the upper ends of said support columns are fixedly connected to the load beam. Said plurality of side wall splice plates are spliced and mounted between the two adjacent support columns.

Further, said front wall includes a plurality of front wall splice plates, and the plurality of front wall splice plates are sequentially assembled to form a wall structure; Said rear wall includes a plurality of rear wall splice plates, and the plurality of rear wall splice plates are sequentially spliced to form a wall structure.

Further, said support plate includes a reinforcing rib and a plurality of base plate bodies, and said plurality of base plate bodies are spliced and mounted on the outer surface of said reinforcing rib.

Further, the invented device includes a camera system. Said camera system is mounted on said reaction force beam.

Further, said axial load device comprises a housing, a servo motor, a ball screw, a nut sleeve, a nut, a bearing sleeve, a loading plate, said ball screw, a nut sleeve, a nut and a bearing bush are all mounted within said housing. Said housing is slidably mounted on the reaction force beam. Said servomotor is slidably mounted on the reaction force beam. Said servomotor is connected in a driving manner to one end of the ball screw via a reduction gear. The nut is screwed onto the other end of the ball screw, and said bearing bush is mounted on the outer side of the nut. Said bearing sleeve is fixedly connected with said nut. Said loading plate is fixedly mounted at one end of said bearing sleeve. The nut sleeve is slidably mounted on the outer side of said bearing sleeve. The end of said nut sleeve is fixedly mounted on the load harness and said nut sleeve is provided with a force sensor.

Further, said invented device comprises an elevator. Said elevator is fixedly mounted on said support column, and the drive end of the elevator is fixedly connected to the housing.

Further, said precipitation simulation system includes a water storage tank, a booster pump, a pressure regulating valve and a plurality of sets of nozzles. Said plurality of sets of nozzles are mounted on the model frame system. Said booster pump is connected with the water storage tank, and said booster pump is in communication with said sets of nozzles through said pressure regulating valve. The return port of said pressure regulating valve is in communication with the water storage tank.

The present invention relates to a slope in situ loading device, comprising a model frame system, an axial load device, a precipitation simulation system and a servo control system. The test model is mounted inside the model chassis system. Said axial load device is fixedly mounted on the model chassis system, and the axial load device is connected to the signal of the servo control system. Said precipitation simulation system is fixedly mounted on the chassis system. In this way, the model is fixed in the frame system. The specimen is pressurized via the axial load device. The servo drive is pressurized via the servo drive system. The model can be loaded and tested according to the actual situation, allowing to perform the simulation of the actual load and the working conditions of precipitation, to perform the in situ test on a slope.

Description of the Figures Figure 1 shows the main structure of the sloped in situ loading device according to one embodiment of the present invention; Figure 2 is a side view showing the structure of Figure 1; FIG. 3 shows the structure of the load beam according to an embodiment of the present invention; Fig. 4 shows the structure of the axial load device according to an embodiment of the present invention; Fig. 5 shows the structure of the reaction force beam according to an embodiment of the present invention; Fig. 6 shows the support column according to one embodiment of the present invention; Fig. 7 shows the support plate according to one embodiment of the present invention; Fig. 8 shows the side wall according to one embodiment of the present invention; FIG. 9 shows a precipitation simulation system according to an embodiment of the present invention. In the figures, the list of parts represented by each number is as follows:

1.load beam, 2.reaction force beam, 3.support column,

4.back wall / front wall, 5.side wall, 6.support plate, 7.camera system, 8.load plate, 9.ballscrew, 10.nut, 11. nut sleeve,

12. bearing bush, 13. force transducer, 14. lift, 15. reducer, 16.

servomotor, 17. nozzle, 18. water storage tank, 19. booster pump,

20. pressure regulating valve. Detailed Embodiments The principles and characteristics of the present invention are described below with reference to the accompanying figures. The embodiment is intended only to illustrate the present invention, but not to limit the fields of application of the present invention. In describing the present invention, it should be understood that terms of orientation or positional relationship such as "top", "bottom", "center", "inside", "outside", "top" or " lower ", are based on the orientation or positional relationship illustrated in the figures. They are used for the convenience of describing the present invention, and simplifying the description. Use of these terms is not intended to indicate or imply that the device or component must necessarily be mounted in any particular orientation, or be constructed and operated in any particular orientation. These terms can therefore not be interpreted as a limitation. In describing the present invention, it should be noted that terms such as "mount", "bind" and "connect" are to be understood broadly. For example, it may be a fixed mount, a detachable mount or a full mount, a mechanical connection or an electrical connection, a direct or indirect connection via an intermediate bracket, or an internal connection between the two components. The specific meaning of the above terms in the present invention can be understood by those skilled in the art on a case-by-case basis.

As shown in Figs. 1-9, the present invention relates to a sloped in situ loading device, comprising a model frame system, an axial load device, a precipitation simulation system and a servo control system. The test model is mounted inside the model chassis system. Said axial load device is fixedly mounted on the model frame system, and the axial load device is connected to the signal of the servo control system. Said precipitation simulation system is fixedly mounted on the chassis system.

In this way, the model is fixed in the frame system. The specimen is pressurized via the axial load device. The servo drive is pressurized via the servo drive system. The model can be loaded and tested according to the actual situation, allowing to perform the simulation of the actual load and the working conditions of precipitation, in order to perform the in situ test on a slope.

The sloped in situ loading device of the present invention, as shown in Figs. 1 to 9, can also be described as follows, based on the technical solution noted above: The model frame system includes a beam load 1, a reaction force beam 2, a front wall, a rear wall, a support plate 6 and two side walls 5. The front wall, the side wall 5, the rear wall and the side wall 5 are spliced. sequentially to form a frame structure. The support plate 6 is mounted under said frame structure, and the two ends of the reaction force beam 2 are respectively removably connected to the two side walls 5. Said load beam 1 is movably mounted under the beam beam. reaction force 2. Said axial load device is mounted on the reaction force beam 2, and the load beam 1 is fixedly coupled to the axial load device. Said precipitation simulation system is mounted between said two side walls 5. The technical solution with improvements is that the side wall 5 comprises a plurality of side wall splice plates 5 and a plurality of support columns 3. The lower ends of said support columns 3 are mounted on the support plate 6, and the upper ends of said support columns 3 are fixedly connected to the load beam 1. Said plurality of side wall splice plates 5 are spliced. and mounted between the two adjacent support columns 3. In this way, the left and right side walls 5 each have four support columns 3, and are bolted to each other with the support plate and the reaction force beam 2, to form a force frame. internal reaction. The support column 3 mainly receives the tensile force during the axial load and the horizontal inflation force during the lateral inflation of the model.

The sloped in situ loading device of the present invention, as shown in Figures 1 to 9, can also be described as follows, based on the technical solution noted above: said front wall comprises a plurality of plates of the front wall splice, and the plurality of front wall splice plates are sequentially assembled to form a wall structure; Said rear wall includes a plurality of rear wall splice plates, and the plurality of rear wall splice plates are sequentially spliced to form a wall structure. In this way, the rear wall and the side wall 5 are welded to each other and are connected with the support column 3 and the support plate. The internal face in contact with the model consists of a transparent plexiglass plate having a thickness of 35 mm. The plexiglass plate is mounted and fixed to the inner steel profile of the wall with screws.

The sloped in situ loading device of the present invention, as shown in Figures 1 to 9, can also be described as follows, based on the technical solution noted above: said support plate 6 comprises a rib of reinforcement and a plurality of base plate bodies, and said plurality of base plate bodies are spliced and mounted on the outer surface of said reinforcement rib. In this way, the support plate is assembled from the separate components to resist the axial stresses brought by the model. Since the stress distribution is uneven when the model is loaded, the front stress is gradually reduced from the position near the rear wall. Therefore, the distribution of the ribs during structural welding is also uneven, which optimizes material use and structural rationality.

The sloped in situ loading device of the present invention, as shown in Figs. 1 to 9, can also be described as follows, based on the technical solution noted above: The device further comprises a camera system 7. Said camera system 7 is mounted on said reaction force beam 2. In this way, the camera system 7 can perform real-time monitoring during the model loading process.

The in situ sloping loading device of the present invention, as shown in Figures 1 to 9, can also be described as follows, based on the technical solution noted above: said axial loading device comprises a housing, a servomotor 16, a ball screw, a nut sleeve 11,

a nut 10, a bearing sleeve 12, a loading plate 8, said ball screw, a nut sleeve 11, a nut 10 and a bearing sleeve 12 are all mounted inside said housing.

Said housing is slidably mounted on the reaction force bundle 2. Said servomotor 16 is slidably mounted on the reaction force bundle 2. Said booster 16 is drive-connected to one end of the ball screw by means of 'a reducer 15. The nut 10 is screwed onto the other end of the ball screw, and said bearing sleeve 12 is mounted on the outer side of the nut 10. Said bearing sleeve 12 is fixedly connected. with said nut 10. Said loading plate 8 is fixedly mounted at one end of said bearing sleeve 12. Nut sleeve 11 is slidably mounted on the outer side of said bearing sleeve 12. The end of said sleeve nut 11 is fixedly mounted on the load beam 1 and said nut sleeve 11 is provided with a force sensor 13. The technical solution with improvements consists in that the axial load device further comprises a elevator 14. Said elevator 14 is fixedly mounted on said support column 3, and the driving end of elevator 14 is fixedly connected to the housing.

In this way, the axial load device comprises a reducer 15, a load beam 1, a load plate 8 and a screw structure.

An intermediate opening of the load beam 1 is made for mounting a ball screw structure.

The load beam 1 can slide freely within a radius of 1.6 meters under the drive of an elevator 14. The loading position is adjusted according to the actual conditions during the test.

The axial load device uses the reducer 15 to drive the ball screw substructure 9.

The rotating screw nut 10 moves vertically. The nut 10 is connected to the support plate 8 for loading the model. The forward end of the nut sleeve 11 has a force sensor 13 for transmitting the real-time loading load data to the servo control system.

The in situ sloping loading device of the present invention, as shown in Figures 1 to 9, can also be described as follows, based on the technical solution noted above: said precipitation simulation system comprises a reservoir storage tank 18, a booster pump 19, a pressure regulating valve 20 and a plurality of sets of nozzles 17. Said plurality of sets of nozzles 17 are mounted on the model frame system. Said booster pump 19 is connected with the water storage tank 18, and said booster pump 19 is in communication with said sets of nozzles 17 through said pressure regulating valve 20. The return port of said valve regulator 20, is in communication with the water storage tank 18. In this way, the precipitation simulation system comprises a water storage tank 18, a booster pump 19, a control valve. pressure 20, a water supply line, nozzles 17 and a flow meter. The rain test can be simulated, and the system flow can be controlled by adjusting the system pressure.

The slope in situ loading device, mainly includes model frame system, axial load device, precipitation simulation system and servo control system. The largest model is a rectangular parallelepiped with a length of 6.5 meters, a width of 5 meters and a height of 5 meters. The loading mode is axial load by servo-drive of the motor, and the axial load device uses a reduction gear 15 to drive the ball screw substructure 9. The rotary screw nut 10 moves vertically. The nut 10 is connected to the support plate 8 for loading the model. The forward end of the nut sleeve 11 has a force sensor 13 for transmitting the real-time loading load data to the servo control system. The driving source is the Panasonic 16 servo motor. The 16 servo motor has a power of 2KW, and the reducer 15 corresponds to the KF97R77 series of large reduction ratio. The ball screw 9 is a large load screw with a diameter of 160 mm. The load capacity of a single group of loading is 2000KN. With a total of 10 groups, the total loading capacity is 20000KN.

As shown in the figures, the in situ slope loading device of the embodiment of the present invention includes a model frame system, an axial load device, a precipitation simulation system and a servo control system. The slope pattern is preformed in the frame and can be used as a potential landslide or collapse soil pattern, and is loaded by the loading device. The upper part of the chassis system is composed of an axial load device and a precipitation simulation system. The loading device is predominantly located in the front half of the chassis system, which corresponds to the working condition on the load application at the top of the slope model. The precipitation simulation system is located in the rear half of the chassis system, which corresponds to the working condition on the application of precipitation on the slope model. As shown in the figures, the loading device mainly comprises a reducer 15, a load beam 1, a loading plate 8 and a ball screw 9. The ball screw 9 passes through the load beam 1 through the perforation. The elevator 14 is bolted to the outside of the screw, and the servomotor 16 controls the reducer 15 to drive the ball screw substructure 9. The rotating screw nut 10 moves vertically. The forward end of the nut sleeve 11 has a force sensor 13 for transmitting the real-time loading load data to the servo control system. The load beam 1 can slide freely within a radius of 1.6 meters under the drive of an elevator 14. As shown in the figures, there are a total of 10 groups of loading systems that can be controlled separately or simultaneously. The precipitation simulation system includes a water storage tank 18, a booster pump 19, a pressure regulating valve 20, a water supply line, nozzles 17, and a flow meter. The rain test can be simulated at the same time as charging, or before or after charging. The system flow can be controlled by adjusting the system pressure. Nozzle 17 is attached in front of the top of the chassis system. The water storage tank 18, the booster pump 19, the pressure regulating valve 20 and the water supply line are attached to the outer side of the frame. Tap water is pre-stored in the water storage tank 18 and the pressure is pressurized to a value required by the booster pump 19. The switch is open, and water is sprayed through the nozzle towards the top of the model with a maximum pressure of 0.3 mpa and a maximum flow rate of 4 m? / h. Using the above device, the simulation of the slope instability process under different loading and rain conditions can finally be performed.

As shown in figure 1-9, load beam 1 is welded using high quality 100mm Q345 carbon structural steel, length 7 meters, height 1.5 meters and 0.6 meter thick. Inside the bundle there are the reinforcing ribs. The net weight of the beam is approximately 23.5 tonnes. The strength and rigidity of the beam are guaranteed at the load conditions of 20,000 KN. The two reaction force beams 2 are installed above the load beam 1, and are connected by bolts to the support column 3. The reaction force beam has a length of 7.1 meters, a width of 1 meter. and a thickness of 0.5 meter, It is of a welded structure of 50mm steel sheet, with the reinforcing ribs inside and the local cipher structure, with a net weight of about 10 tons. Within 1.6 meters of the working surface of load beam 1, the supporting force of reaction force beam 2 is 10,000 KN. As shown in Figs 1-9, a total of 8 support columns 3 of the left and right side walls 5, are welded H-shaped steel of 1000 x 300mm. When the axial load is 20,000 KN, a total of four support columns 3 provide a reaction force to the load beam 1. The average load of a support column 3 is 5000 KN.

As shown in Figures 1 through 9, the support plate is subjected to the axial stress caused by the model. Since the stress distribution is uneven when the model is loaded, the front stress is gradually reduced from the position near the rear wall. Therefore, the distribution of the ribs during structural welding is also uneven, which optimizes the use of materials and structural rationality. The size of the whole backing plate is very large, so the transportation process is difficult. Thus, the design of the structure broken down into several parts is adopted, so that these components are assembled into a whole on the site. The size of the backing plate is 7100 * 7000 * 500mm. As shown in Figs. 1 to 9, the rear wall and the side wall 5 are welded in an H-shape of 50B, and are connected with the support column 3 and the support plate. The maximum height is 5.5 meters, exceeding 0.5m of the model height, and the thickness is 0.5m. The internal face in contact with the model consists of a transparent plexiglass plate having a thickness of 35 mm. The plexiglass plate is mounted and fixed to the inner steel profile of the wall with screws.

The foregoing are only preferred embodiments of the present invention and are not intended to limit the fields of application of the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and scope of the present invention, should be included within the scope of protection of the present invention.

Claims (9)

Claims 0520 195006 1. Slope in situ loading device, characterized in that it comprises a frame system, an axial load device, a precipitation simulation system and a servo control system. The test model is placed in the chassis system. Said axial load device is fixedly mounted on the chassis system of the model, and the axial load device is connected to the signal of the servo control system. Said precipitation simulation system is fixedly mounted on the chassis system. 2. Slope in situ loading device according to claim 1, characterized in that the chassis system comprises a load beam (1), a reaction force beam (2), a front wall, a rear wall, a plate. support (6) and two side walls (5). Said front wall, side wall (5), rear wall and side wall (5) are sequentially spliced to form a frame structure, said support plate (6) is mounted under said frame structure, and both ends of the frame. Reaction force bundle (2) are removably connected to the two side walls (5). Said load beam (1) is movably mounted under the reaction force beam (2). Said axial load device is mounted on the reaction force beam (2), and the load beam (1) is fixedly coupled to the axial load device. Said precipitation simulation system is mounted between said two side walls (5). A sloped in situ loading device according to claim 2, characterized in that the side wall (5) comprises a plurality of side wall splice plates (5) and a plurality of support columns (3). The lower ends of said support columns (3) are mounted on the support plate (6), and the upper ends of said support columns (3) are fixedly connected to the load beam (1). Said plurality of side wall splice plates (5) are spliced and mounted between the two adjacent support columns (3). A sloped in situ loading device according to claim 3, characterized in that the front wall comprises a plurality of front wall splice plates, and the plurality of front wall splice plates are sequentially assembled to form. a wall structure; Said rear wall includes a plurality of rear wall splice plates, and the plurality of rear wall splice plates are sequentially spliced to form a wall structure. A sloped in situ loading device according to claim 4, characterized in that the support plate (6) comprises a reinforcing rib and a plurality of base plate bodies, and said plurality of base plate bodies are spliced. and mounted on the outer surface of said reinforcing rib. 6. Device for loading in situ on a slope according to claim 2, characterized in that it further comprises a camera system (7). Said camera system (7) is mounted on said reaction force beam (2). 7. Slope in situ loading device according to claim 2, characterized in that the axial load device comprises a housing, a booster (16), a ball screw, a nut sleeve (11), a nut (10) , a bearing bush (12), a loading plate (8), said ball screw, a nut sleeve (11), a nut (10) and a bearing bush (12) are all mounted to the interior of said housing. Said housing is slidably mounted on the reaction force beam (2). Said servomotor (16) is slidably mounted on the reaction force beam (2). Said servomotor (16) is driven in a driving manner to one end of the ball screw via a reduction gear (15). The nut (10) is threaded onto the other end of the ball screw, and said bearing bush (12) is mounted on the outer side of the nut (10). Said bearing sleeve (12) is fixedly connected with said nut (10). Said loading plate (8) is fixedly mounted at one end of said bearing bush (12). The nut sleeve (11) is slidably mounted on the outer side of said bearing sleeve (12). The end of said nut sleeve (11) is fixedly mounted on the load harness (1) and said nut sleeve (11) is provided with a force sensor (13). 8. In situ sloping loading device according to claim 7, characterized in that it further comprises an elevator (14). Said elevator (14) is fixedly mounted on said support column (3), and the driving end of the elevator (14) is fixedly connected to the housing. 9. Device for loading in situ on a slope according to claim 1, characterized in that the precipitation simulation system comprises a water storage tank (18), a booster pump (19), a pressure regulating valve ( 20) and a plurality of sets of nozzles (17). Said plurality of sets of nozzles (17) are mounted on the model frame system. Said booster pump (19) is connected with the water storage tank (18), and said booster pump (19) is in communication with said sets of nozzles (17) through said pressure regulating valve (20). ). The return port of said pressure regulating valve (20) is in communication with the water storage tank (18).